EP3954345B1 - Pédale de commande réglable pour chirurgie ophtalmique - Google Patents

Pédale de commande réglable pour chirurgie ophtalmique Download PDF

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Publication number
EP3954345B1
EP3954345B1 EP21197411.8A EP21197411A EP3954345B1 EP 3954345 B1 EP3954345 B1 EP 3954345B1 EP 21197411 A EP21197411 A EP 21197411A EP 3954345 B1 EP3954345 B1 EP 3954345B1
Authority
EP
European Patent Office
Prior art keywords
foot
treadle
guides
foot pedal
pedal control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21197411.8A
Other languages
German (de)
English (en)
Other versions
EP3954345A1 (fr
Inventor
Tuan Tran (Tom) M.
James Gerg
Praveen De Silva
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson and Johnson Surgical Vision Inc
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Johnson and Johnson Surgical Vision Inc
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Filing date
Publication date
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Publication of EP3954345A1 publication Critical patent/EP3954345A1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/26—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for operation by a part of the human body other than the hand, e.g. by foot
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/25—User interfaces for surgical systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A61F9/00745—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments using mechanical vibrations, e.g. ultrasonic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A61F9/00754—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments for cutting or perforating the anterior lens capsule, e.g. capsulotomes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/014—Application surgical instrument
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20528—Foot operated

Definitions

  • the present application relates to operating controls for ophthalmic surgical apparatus and, more particularly, to an adjustable foot operated control.
  • Ophthalmic surgical apparatus such as phacoemulsification apparatus typically include operating controls for regulating parameters or functions of the apparatus.
  • Such phacoemulsification apparatus is particularly directed for surgically removing the natural, crystalline lenses from cataractic eyes prior to the insertion of an artificial intraocular lens.
  • Such apparatus typically includes a control cabinet, power supply, one or more pumps as well as associated electronic hardware for operating a multifunction handheld surgical implement in order to sonically emulsify eye tissue, irrigate the eye with a saline solution and aspirate the emulsified lens from the eye.
  • foot controls are frequently provided in order to facilitate use of the handpiece by delegating other control functions to the foot pedal device.
  • foot pedal device systems which included a variety of pneumatic and electrical actuators to control the ophthalmic surgical apparatus.
  • improved foot pedal control systems such as that described in U.S. Pat. No. 4,983,901 provide for a virtually unlimited number of control variations and modes for operating phacoemulsification apparatus.
  • One popular type of foot control is termed a dual-control foot pedal because of the two directions of foot movement to actuate the controls.
  • a treadle (the actual pedal) may be pivoted in a vertical plane, as in a standard car accelerator-type pedal, while also rotated in a horizontal plane or yaw direction.
  • one or more other foot-actuated switches placed close to the treadle are often provided for easy access.
  • the foot pedal must be user friendly in order to provide a surgeon comfort and reliability in its use so as not to initiate disruption of the surgeon's concentration when performing surgery.
  • the surgeon's posture is influenced by efforts to prevent losing contact with the foot pedal, which is achieved by keeping one foot flexed above the pedal and loading the body weight on the other foot. This causes a non-ergonomic posture which can lead to physical discomfort, and sometimes mistakes in control of the foot pedal.
  • US 4 965 417 A discloses a foot-operated control pedal for control of a plurality of devices.
  • the foot pedal is provided with particular adjustments so as to adapt the foot pedal to various sizes and positions of an operator's foot.
  • US 2002/070840 A1 discloses a foot pedal for the control of medical apparatus that is connected to and movably seated on a floor plate by means of a joint connection, a sensor linked to a switch element, and a repositioning means disposed between the floor plate and the pedal.
  • US 2008/067046 A1 discloses a footswitch assembly with a position memory including a first adjustable mounting mechanism for moving a heel cup portion to adjust for the length of a user's foot and a second adjustable mounting mechanism for moving a side wing assembly to adjust for the width of a user's foot.
  • the present application provides a foot pedal control for a surgical system (e.g., an ophthalmic surgery system) that adjusts to a number of different sizes of users' shoes, as recited in claim 1.
  • a surgical system e.g., an ophthalmic surgery system
  • the foot pedal control has a treadle on which a user places his or her foot.
  • a pair of adjustable guides mount to the treadle and conform to both sides of the foot.
  • the guides are shaped and positioned to conform to a wide variety of feet or shoes, and may easily be adjusted between users.
  • both of the guides are adjustable, and the guides may be adjustable independent of one another or move in tandem.
  • the guides may each mount to articulate on the treadle with at least two adjustable segments.
  • both of the guides are also adjustable in an anterior-posterior direction, however at least one adjustable guide is preferably adjustable in an anterior-posterior direction and translates along an angled slot in the treadle.
  • the angled slot desirably extends from a posterior point outward in an anterior direction at an angle of between about 15° and 45° from the longitudinal axis of the treadle.
  • the guide may be configured to move along the angled slot in a ratcheted fashion so as to have a series of stop positions distinguished by audible and/or tactile clicks.
  • the treadle may be a dual-motion treadle also mounted for vertical pivoting movement relative to the base, and the control may further include a sensor that tracks the pivoting movements and generates an electronic signal therefor.
  • the guides have a rail extending upward to a height generally perpendicular to the foot platform of between about 15 mm (0.6 inches) and 38 mm (1.5 inches).
  • the guides may be elongated in an anterior-posterior direction and S-shaped so as to have convex and concave inner faces to conform to different areas of users' feet.
  • the treadle further includes a heel stop at the posterior end of the foot platform, the heel stop being convertible from a first position extending upward from the foot platform and a second position at or below the level of the foot platform.
  • the surgery unit is for ophthalmic surgery and the operative tip is adapted for insertion into an eye and includes a lumen for aspiration. Variations of the foot pedal control in the surgical system are described above.
  • the present application describes an improved foot pedal control for ophthalmic surgery that adjusts to a number of different sizes of users' shoes.
  • An exemplary illustrated embodiment is designed for ophthalmic surgery, although the foot pedal control may be modified for other types of surgery, such as endoscopic coagulation surgery.
  • the exemplary foot pedal is described as having a number of functional features, and it should be understood that some of these features may be amended or modified as needed.
  • the illustrated design with an adjustable foot shape and movable handle is particularly well-suited for the controls shown, those controls may be modified while still retaining the novel aspects described herein.
  • FIG 1 is a top view of a foot pedal control 20 for ophthalmic surgery that is available as Model No. AMO SOV680701 from Advanced Medical Optics, Inc. of Santa Ana, CA.
  • the foot pedal control 20 includes a base 22 having an upstanding, generally inverted U-shaped carrying handle 24 thereon.
  • a generally rectangular treadle 26 having a non-stick surface thereon is arranged to pivot on the base 22, much like the accelerator of a car.
  • a pair of side switches 28 projects outward from the base 22 on either side of the toe portion of the treadle 26.
  • Electronic circuitry (not shown) within the foot pedal control 20 translates depression of the treadle 26 into a control signal for whatever surgical instrument (not shown) to which the foot pedal connects.
  • FIG. 2 shows another prior art foot pedal control 30 for ophthalmic surgery, as described in U.S. Patent Publication No. 2006/0219049 assigned to Alcon, Inc. , of Fort Worth Texas. Alcon makes a similar looking foot pedal control and markets it in conjunction with its Infiniti ® phacoemulsification surgical system.
  • the foot pedal control 30 includes a body or housing having a bottom portion 32 and a top portion 34, and a foot pedal or treadle 36.
  • the control 30 includes a separate heel cup assembly 38 and a carrying handle 40 positioned in the front.
  • Side or wing switches 42 mount on the top housing portion 34 on either side of the treadle 36. It should be noted that the switches 42 mount to the housing and remain stationary until actuated by lateral contact with the user's foot from on the treadle 36.
  • the heel cup assembly 38 is positioned at the rear portion of the foot pedal control 30 to engage the heel of the operator, and allows the operator to rotate the heel cup assembly through an arcuate path 44. This movement produces an electrical signal received by encoder assembly (not shown) as an additional control signal to the surgical system. Furthermore, an ON/OFF switch is included in the heel cup assembly 38, such as a slide switch actuated by moving the heel cup assembly along a linear path 46. Although this design provides functionality, it is not the most intuitive or convenient to use.
  • Figures 3A-3D are bottom plan views of a number of different shoe sole shapes to illustrate the wide variety of potential users of foot pedal controls.
  • Figure 3A is a standard flat sole preferred by many female medical professionals, in a relatively large shoe size for the left foot.
  • Figure 3B is a somewhat smaller-sized left-footed, high-heeled shoe with a larger metatarsal region.
  • Figure 3C shows an even smaller-sized low-heeled shoe for the right foot that is substantially narrower than the high-heeled shoe.
  • Figure 3D the sole of a relatively large-sized running shoe for the right foot indicates a still further shape variation.
  • FIG 4 is a perspective view of an exemplary foot pedal control 50 for use in a surgical system, for instance for ophthalmic surgery.
  • the foot pedal control 50 as also seen exploded in Figures 6 and 7 , comprises a base 52 on which is mounted a treadle 54 and a carrying handle 56.
  • the base 52 has an undercarriage 58 arranged to lie flat on a ground surface. More specifically, the undercarriage 58 includes either a flat bottom surface or a series of separate feet that provide a stable base surface on the ground.
  • the foot pedal control 50 extends upward from the undercarriage 58, a forward or anterior direction is to the left in Figure 4 , and a rearward or posterior direction is to the right.
  • the treadle 54 is symmetric about a vertical medial plane bisecting the treadle into two substantially symmetric lateral (left and right) halves.
  • the various components of the foot pedal control 50 may be made from any suitable material, such as stainless steel, titanium or plastic.
  • the treadle 54 mounts for movement on the base 52 to provide a movable control surface for the user.
  • a variety of different movements for the treadle 54 may be provided, although the present invention provides particular advantages for treadles mounted for rotational yaw movement relative to the base 52, as seen by the movement arrows in Figure 4 .
  • the treadle 54 may be mounted for pivoting movement in a vertical plane (pitch), as seen by the movement arrows in Figure 5 , or may be a dual-control treadle capable of both yaw and pivoting movement.
  • the foot pedal control 50 further incorporates one or more sensors that track the movements thereof and generate an electronic signal therefor. As will be explained in the context of the surgical system shown in Figure 19 , the generated signal is used to control various functions of an operative tip, such as an ultrasonically vibrated needle with aspiration in a phacoemulsification/vitrectomy system.
  • Figures 5 and 5A show the base 52 comprises a housing 60 having a pair of upstanding posterior shoulders 62 laterally flanking a central depression 64.
  • a posterior end of the treadle 54 extends between the shoulders 62 and mounts on a dual-axis pivot assembly 66.
  • the pivot assembly 66 enables both yaw movement and pitch (pivoting) movement in a vertical plane. That is, the anterior end of the treadle 54 may be moved side-to-side as indicated by the movement arrows in Figure 4 , or in a vertical plane as indicated by the movement arrows in Figure 5 .
  • the pivot assembly 66 desirably incorporates biasing members (e.g., springs) that tend to return the treadle 54 to a neutral position having an angle to the vertical as seen in Figure 5 and horizontally centered between the shoulders 62 and along a medial plane over the base 52.
  • biasing members e.g., springs
  • the treadle 54 range of movement is desirably symmetric about the medial plane so as to avoid any difference for left- and right-footed users.
  • Figure 7 best illustrates a circuit board 70 and various electronic components provided in the foot pedal control 50.
  • the pivot assembly 66 registers with sensors, such as encoder assemblies, that translate the yaw position as well as the angular or pitch position of the treadle 54, and communicate with the circuit board 70.
  • sensors such as encoder assemblies
  • separately functional side or wing switches 72 may be placed on the top of housing 60 on either side of the treadle 54, such as on the shoulders 62.
  • the switches 72 provide alternative controls, such as power and operating mode controls.
  • a wire or wireless transmitter (not shown) communicates the resultant signals to the aforementioned surgical system for controlling an operative tip thereof.
  • the foot pedal control 50 of the present invention incorporates a number of features that greatly improved the ease-of-use thereof for a variety of different foot and/or shoe sizes and styles.
  • a pair of laterally-adjustable guides 80 mount on the treadle 54 flanking a central foot platform 82.
  • the foot platform 82 has a non-slip (e.g., rubber) liner with bumps or other friction-enhancing features.
  • a heel stop 84 may be converted between an up position as shown for receiving and supporting the heel of the user, and a down position out of the way of the user.
  • the carrying handle 56 converts between at least two positions depending on the preference of the user, as will be explained below.
  • various ergonomic shapes, surfaces, and placements of the functional features of the foot pedal control 50 facilitate use by a variety of foot sizes and shapes. It should be understood that each of these advantages may be incorporated into existing foot pedal controls by themselves, or in combination with any of the others.
  • the adjustable guides 80 are shown in two different potential positions on the treadle 54. In these views, up on the page corresponds to the anterior direction, down corresponds to the posterior direction, a medial plane M extends out of the page through a central plane of the treadle 54, and the adjustable guides 80 are disposed laterally outward therefrom, flanking the foot platform 82.
  • the guides 80 are shown displaced laterally outward from the medial plane M, and upward in an anterior direction, while in Figure 8B the guides or displaced laterally inward toward the medial plane M and downward in a posterior direction.
  • the adjustable guides 80 are mounted to the treadle 54 and move between these two positions in tandem. However, as will be explained below, various other possible configurations for the guides 80 are contemplated.
  • the lateral inward and outward movement of the guides 80 relative to the medial plane M adjusts the spacing therebetween. This provides flexibility for users having different sizes of feet or shoes, as the case may be. As mentioned above, many users operate foot controls wearing just socks, while others prefer to leave their shoes on. Preferably, the guides 80 adjust inward to a minimum spacing to accommodate the smallest user foot without a shoe, such as women's' size 5, while they also adjust outward to a maximum spacing to accommodate large shoes such as size 13 men's'.
  • Figures 9A-9D illustrate the same shoe bottoms as previously described with respect to Figures 3A-3D , but this time showing the adjustable guides 80 on either side thereof in different locations conforming to the various shoes.
  • the guides 80 are shown not only moved laterally inward or outward, and upward or downward (anterior or posterior), but also rotated to conform to the various shoes.
  • the illustrated mechanism for displacing the guides 80 does not explicitly accommodate such rotation, it is shown here to illustrate a further possible movement.
  • the guides 80 may be adjusted to contact either side of the shoes, or merely be relocated to reduce the space between the shoes and the guides.
  • each of the guides 80 is elongated in an anterior-posterior direction and includes a lip 86 extending toward the other guide and generally parallel to the foot platform 82.
  • Each guide 80 further includes a rail 88 extending upward from the lip 86 and generally perpendicular to the foot platform 82.
  • the shallow lips 86 provide sock-catchers, in a manner of speaking, in that they help prevent the guides 80 from snagging loose booties or socks during adjustment or movement of the foot.
  • the lips 86 are generally tapered downward in height toward the medial plane M from the rails 88, and the user at all times steps on the lips which helps prevent folds of the sock from getting trapped under the guides.
  • the lips 86 are also rounded to eliminate any corners to catch on socks.
  • the anterior-posterior length of the upstanding rails 88 desirably provides enough surface area for the user to comfortably laterally press his or her foot on either guide and cause the treadle 54 to rotate in the yaw direction. That is, although the rails 88 may be as small as a post and still provide a reaction surface against which to engage the foot, they desirably have a length of at least 38 mm (1.5 inches) for comfort and greater control.
  • the height of the rails 88 is desirably great enough to prevent the user's sock-covered foot or shoe from riding over them, but is not too great to permit the user to easily lift his or her foot out from between the guides when needed.
  • the user may wish to regularly actuate one or both of the two wing switches 72, which require rapidly placing and removing the foot between the guides 80.
  • the guides 80 have an upward height generally perpendicular to the foot platform 82 of between about 15 mm (0.6 inches) and 38 mm (1.5 inches).
  • the guides 80 are desirably contoured to match typical foot shapes. As mentioned, the user may be wearing a sock or some type of shoe, but all feet and shoes are somewhat narrow toward the arch and heel, or on a posterior end, and broader adjacent the metatarsal bones, or on the anterior, forward end. Therefore, the exemplary guides 80 are slightly outwardly angled in an anterior direction, as indicated in Figure 8A , by the angle ⁇ between a line extending from one tip to another of the guide and a reference line parallel to the medial plane M. Furthermore, the guides 80 desirably have an S-shaped so as to define both convex and concave regions on their inner faces that conform to different areas of users' feet.
  • a convex-inward posterior segment 90 and a concave-inward anterior segment 92 match concave arch and convex metatarsal areas, respectively, of typical foot /shoe shapes.
  • the axial height of the rails 88 varies from a maximum at the midpoint to reduce heights at the anterior and posterior tips. That is, the rails 88 are gradually tapered to have a taller middle and shorter ends. This helps avoid snagging socks on the rails, and also facilitates moving the foot in out from between the rails. Furthermore, the tapered height reduces corner angles in case the user accidentally steps down hard on them.
  • the exemplary guides 80 desirably translate along angled slots in the treadle 54, and are mounted so as not to rotate.
  • one of the guides 80 may be stationary while the other adjusts.
  • a simple alternative adjustable guide comprises blocks having pins that are movable between a series of holes in the treadle 54.
  • both guides 80 shown in Figure 8A may be completely separated from the treadle 54 and replaced in different holes to create the spacing shown in Figure 8B .
  • the matching pins and holes for such separate blocks desirably prevent rotation of the guides for stability.
  • the matching pins and holes may be other than circular, or more than one matching pin and hole combination for each guide may be provided,
  • FIGs 10 and 11 are exploded perspective views of the treadle 54 of the foot pedal control 50 showing an exemplary lateral adjustment mechanism.
  • the treadle 54 includes a foot plate 100 on which a rubber cover 102 is placed to define the central foot platform 82.
  • the foot plate 100 mounts to and covers a lower actuation plate 104.
  • the foot plate 100 further includes a pair of angled slots 106 through which upstanding brackets 108 from the foot plate extend.
  • the brackets 108 fit within similarly-shaped receptacles on the underside of each of the guides 80 ( Figure 11 ).
  • the brackets 108 each receive two guide pins 110 (e.g., rivets) that slide along a pair of parallel guide slots 112 provided in the actuation plate 104 (seen from below in Figure 6 ).
  • the brackets 108 each feature an inwardly angled finger 114 having a slot therein that receives a pair of pins 116 on one of two oppositely extending wings 118 of a central ratchet member 120.
  • the ratchet member 120 is in the shape of a cross with an elongated central beam 122 and the outwardly extending wings 118. Upstanding pegs 124 in the actuation plate 104 project through a central channel 125 in the ratchet member 120.
  • a pawl member 130 is mounted to rotate about a pin 132 on the plate 128. As seen best in Figures 12A and 12B , the pawl member 130 is constrained for minimal lateral movement between an upstanding step 134 on the plate 128 and a series of ratchet teeth 136 on the ratchet member 120. A small spring the biases a pawl 140 on the pawl member 130 toward the ratchet teeth 136.
  • the ratchet member 120 overlays both the triangular plate 128 and the inwardly angled fingers 114 on each of the brackets 108.
  • the ratchet member 120 further includes a bent tab 142 that protects downward into an elongated channel 144 in the actuation plate 104 (see also Figure 11 ).
  • the upstanding pegs 124 and cooperation between the bent tab 142 and channel 144 constrain the ratchet member 120 to longitudinal movement over the actuation plate 104.
  • the two pins 116 on each of the oppositely extending wings 118 of the ratchet member 120 therefore remain in the same relative orientation and translate longitudinally.
  • brackets 108 Interaction between the pins 116 and the slots in the angled fingers 114 of the brackets 108 links movement of the ratchet member 120 to movement of the brackets. At the same time, the cooperating pins 110 restrict movement of the brackets 108 to linear movement along the angled slots 112 in the actuation plate 104. The brackets 108 can move laterally with respect to the ratchet member 120 by virtue of the sliding play between the pins 116 and the slots in the angled fingers 114.
  • Figures 12A and 12B show two different positions of the mechanism.
  • the central ratchet member 120 is relatively high on the actuation plate 104 as seen by the relative positions of the lower peg 124 in the bottom of the longitudinal channel 125.
  • the pins 116 on the outwardly extending wings 118 are close to the innermost end of the slots in the angled fingers 114 of the brackets 108.
  • the pins 110 on the brackets 108 are close to the top ends of the angled slots 112 in the actuation plate 104. This corresponds to the position of the guides 80 shown in Figure 8A .
  • a movement of the guides 80 may be accomplished by either manually displacing one or both of the guides 80 from the top of the treadle 54, or by linearly displacing the bent tab 142 that extends through the channel 144 to the underside of the treadle.
  • a more ergonomically comfortable (plastic) knob or lever may be mounted on the end of the bent tab 142, such as the widened grip 146 seen in Figure 6 .
  • the angle at which the guides 80 move along slots in the treadle 54 should be selected so that the guides can be easily moved by hand yet hold their lateral positions against foot movement.
  • the angled parallel guide slots 112 along which the brackets 108 slide may extend from a posterior point outward in an anterior direction at an angle ⁇ of between about 15° and 45° from a longitudinal axis of the treadle 54, preferably between about 15° and 30°, and in an exemplary embodiment ⁇ is about 25°.
  • ⁇ is about 25°.
  • the longitudinal axis of the treadle 54 corresponds to the medial plane M bisecting the treadle into two substantially symmetric lateral halves.
  • the slots 106 in the foot plate 100 also mirror this angle, though some play may be introduced to accommodate the shape and/or rotation of the brackets 108.
  • the guides 80 slide along the same angled slots but without the connecting/ratcheting structure.
  • the guides may be locked in place with a bolt/wing nut combination accessed under the treadle 54.
  • the guides may be arranged to pivot about axes perpendicular to the foot platform 82, and locked in position with a threaded tightener.
  • the guides 80 may be spring-biased into their outward-most position and automatically constrict to conform to the user's foot after the user steps on the foot platform 82. When the user removes his or her foot, the guides 80 spring outward again to be ready to accommodate the largest feet/shoe.
  • Another possible means for translating the guides 80 is a motor of some sort. Much like the adjustment of a car seat, the user may have full control over an infinite number of positions of the guides 80, in tandem or separately, using electronic control switches.
  • Figures 13A and 13B are perspective views of the foot pedal control 50 showing the guides 80 adjusted to fit two different sizes and shapes of shoes. Specifically, Figure 13A illustrates the guides 80 adjusted to fit a relatively narrow woman's heeled shoe, while Figure 13B shows the guides conforming around a flat-soled somewhat broader shoe.
  • the carrying handle 56 lies out of the way and generally parallel to the ground, or in terms of the foot control pedal, parallel to the undercarriage of the base 52. This permits the user to easily engage and disengage the foot pedal control 50, and also to actuate the wing switches 72.
  • Figure 13A shows the heel stop 84 in its down position which may be preferred for the high-heeled type of shoe shown. That is, this type of shoe does not conform easily to the heel stop 84, and thus the heel stop is most likely pivoted down out-of-the-way. In contrast, the shoe in Figure 13B conforms nicely to the concave heel stop 84, which is in the up position.
  • the exemplary heel stop 84 comprises an arcuate rigid member having two free ends 150 with through holes that pivot on a common axis about pins 152 secured at the rear sides of the actuation plate 104 of the treadle 54.
  • the concave inside curvature of the heel stop 84 closely conforms to the convex posterior end of the treadle 54.
  • An inside chamfer 154 on the upper corner of the heel stop 84 facilitates release of the user's foot from the treadle 54, especially in cases where the posterior end of the user's shoe sole is highly angled.
  • a small locking button 156 may be mounted through a midline of the heel stop 84 for engagement with a depression or other such feature on the posterior end of the treadle 54.
  • the locking button 156 is desirably spring-loaded toward the treadle 54, whereby the user simply pulls a button in a rearward direction to release and pivot the heel stop 84 between its up and down positions. The locking button 156 automatically clicks back into one of its locking positions.
  • the heel stop 84 may alternatively be provided as a member separable from the treadle 54 which can be stored on the base 52, for example, until needed, and then simply inserted into mounting holes in the treadle.
  • Figures 14A and 14B show the two different positions of the carrying handle 56, which connects to the base 52 and converts between at least these positions - a first position above the treadle 54 and generally perpendicular to the undercarriage 58 of the base ( Figure 14A ), and a second position out of the way of the treadle 54 and generally parallel to the undercarriage 58 ( Figure 14B ).
  • the second position may be preferred by those users who like easy entry and removal of their foot from the foot pedal control 50, especially if the procedure requires constant use of the wings switches 72.
  • some users may prefer the first position with the carrying handle 56 over the treadle 54 to provide a measure of protection from others inadvertently stepping on the control surfaces, or as a means to easily reposition the foot pedal control 50 during a surgical procedure.
  • Figures 15 and 16 show two different users' feet in the foot pedal control 50 with the carrying handle 56 in its first position above the treadle 54. Even with the carrying handle 56 up, as in Figure 15 , the user can easily access the wings switches 72 because of the contours of the handle. More specifically, the carrying handle 56 preferably defines an inverted U-shape with two free ends 160 that mount to the base 52 and pivot about a common axis parallel but offset with respect to a plane defined by the undercarriage 58 of the base. Curvilinear side struts 162 are shaped to be convex in the anterior direction to arc out of the way of side movement of the user's foot.
  • a relief area provided by the arcuate side struts 162 facilitates sideways movement of the user's foot when attempting to actuate the wings switches 72 or otherwise remove the foot from the treadle 54.
  • Figure 16 illustrates another use of the carrying handle 56 when it is in its first or up position. Namely, the user can reposition the entire foot pedal control 50 by lifting it with his or her foot on the underside of the carrying handle 56.
  • the convertible carrying handle 56 thus provides enhanced flexibility for the foot pedal control 50.
  • one or more locking detents secure the carrying handle 56 in various discrete positions.
  • the illustrated embodiment shows a lock/release button 164 extending outward from each of the free ends 160 of the carrying handle 56.
  • the user depresses both of the buttons 164 inward against a spring bias to release the carrying handle 56 for conversion between various positions.
  • various depressions or grooves may be provided on the side of the base 52 with which inner ends of the buttons 164 register at the discrete stop positions.
  • only one button 164 is needed to lock the carrying handle 56, two buttons requires both hands to operate and may help prevent inadvertently trapping a finger or other appendage between the pivoting handle 56 and the base 52.
  • Figures 17A and 17B show two different methods of carrying the foot pedal control 50 with the carrying handle 56 in raised and lowered positions, respectively.
  • the foot pedal control 50 may be repositioned short distances with the user's foot.
  • the entire unit may be easily lifted and move to a different area in the operating room with the handle 56 in the up position of Figure 17B , especially if it is a wireless unit.
  • a user can carry the foot pedal control 50 with the handle 56 converted to lie parallel to the undercarriage of the base 52, as in Figure 17A , which results in a lower overall profile, typical for storage.
  • One version of the foot pedal control 50 weighs between 10-11 lbs.
  • FIGS 18A and 18B show an alternative foot pedal control treadle 170 having articulated laterally-adjustable guides 172.
  • Each of the guides 172 includes a first segment 174 pivotally mounted to a treadle 176, and a second segment 178 pivotally mounted to the first segment 174.
  • the first segments 174 are mounted to rotate at about a midpoint of the anterior/posterior dimension of the treadle 176 and extend in an anterior direction, while the second segments 178 extend farther in an anterior direction.
  • this orientation could be reversed with the anterior segments 178 mounted to the treadle 176.
  • there are numerous possible arrangements of articulated guides with a plurality of adjustable segments the illustrated embodiment being necessarily representative.
  • the combination of the first and second adjustable segments 174, 178 defines an S-shape with both convex and concave regions on their inner faces that conform to different areas of users' feet.
  • the separately pivotal segments 174, 178 an even greater range of adjustment is possible.
  • each of the first and second adjustable segments 174, 178 rotates about a pivot point and may be locked in a plurality of different angular rotations.
  • Figure 18B shows each second adjustable segment 178 in phantom to illustrate a pivot shaft 180 as well as two stop pins 182.
  • the stop pins 182 may be spring-biased toward a plurality of depressions 184 formed in a circular array on flanges 186 of the corresponding first adjustable segment 174.
  • each second adjustable segment 178 may be incrementally rotated about the pivot shaft 180 with the stop pins 182 falling into the depressions 184 and nominally holding the second adjustable segment relative to the first adjustable segment 174.
  • the force required to rotate the second adjustable segment 178 is relatively small it may be sufficient as the user's foot typically presses down on the (rubber-lined) treadle 176, creating friction, and thus does not apply large lateral forces against the guides 172.
  • the mechanism may require the user to press axially downward on the respective segments to unlock them for rotation.
  • FIG. 19 illustrates an exemplary phacoemulsification/vitrectomy system 200 in a functional block diagram to show the components and interfaces for a safety critical medical instrument system in which the foot pedal control disclosed herein may be utilized.
  • a serial communication cable 202 connects a graphical user interface (GUI) host 204 and instrument host 206 for the purposes of controlling the surgical instrument host 206 by the GUI host 204.
  • the instrument host 206 may be considered a computational device in the arrangement shown, but other arrangements are possible.
  • a switch module associated with an exemplary foot pedal 208 such as described herein, transmits control signals relating internal physical and virtual switch position information as input to the instrument host 206 over a serial communications cable 210, or wirelessly if desired.
  • Instrument host 206 may provide a database file system for storing configuration parameter values, programs, and other data saved in a storage device (not shown).
  • the database file system may be realized on the GUI host 204 or any other subsystem (not shown) that could accommodate such a file system.
  • the system 200 has a hand-held operative tip 212 that typically includes a needle and electrical means, such as a piezoelectric crystal, for ultrasonically vibrating the needle.
  • the instrument host 206 supplies power on line 214 to the operative tip 212.
  • An irrigation fluid source 216 can be fluidly coupled to operative tip 212 through line 218.
  • the irrigation fluid and ultrasonic power are applied by the operative tip 212 to an eye 220, or other affected area or region.
  • the irrigation source may be routed to the eye 220 through a separate pathway independent of the handpiece.
  • Aspiration is provided to the eye 220 by one or more pumps (not shown), such as a peristaltic pump and/or venturi pump, via the instrument host 206, through lines 222 and 224.
  • a surgeon/operator may select an amplitude of electrical pulses either using the handpiece, via the instrument host and GUI host, using the foot pedal, and/or voice command.
  • An interface communications cable 226 connects to the instrument host 206 for distributing instrument sensor/parameter data 228, and may include distribution of instrument settings and parameter information, to other systems, subsystems and modules within and external to instrument host 206. Although shown connected to the instrument host 206, interface communications cable 226 may be connected or realized on any other subsystem (not shown) that could accommodate such an interface device able to distribute the respective data.

Claims (9)

  1. Dispositif de commande à pédale pour un système chirurgical, comprenant :
    un socle (52) ;
    une pédale (54) installée à des fins de mouvements de rotation de lacet par rapport au socle (52) et comportant une plateforme à pied globalement plane ;
    un capteur qui suit les mouvements de lacet de la pédale (54) et génère un signal électronique associé ; et
    une paire de guides (80) installés sur la pédale (54), flanquant la plateforme à pied et s'étendant vers le haut à partir de celle-ci, au moins un des guides (80) étant mobile afin d'ajuster l'espacement latéral entre ceux-ci et d'accueillir des largeurs de pied variables sur la plateforme à pied entre ceux-ci, caractérisé en ce que :
    les guides (80) sont allongés dans une direction antérieure-postérieure et comprennent chacun une lèvre (86) s'étendant vers l'autre guide (80) et globalement parallèle à la plateforme à pied, et une glissière (88) s'étendant vers le haut à partir de la lèvre (86) globalement perpendiculairement à la plateforme à pied.
  2. Dispositif de commande à pédale selon la revendication 1, dans lequel la pédale (54) est une pédale à double mouvement également installée à des fins de mouvement de pivotement vertical par rapport au socle (52), et le dispositif de commande (50) comprenant, en outre, un capteur qui suit les mouvements de pivotement et génère un signal électronique associé.
  3. Dispositif de commande à pédale selon la revendication 1, dans lequel la glissière (88) s'étend vers le haut jusqu'à une hauteur globalement perpendiculaire à la plateforme à pied comprise entre environ 15 mm (0,6 pouce) et 38 mm (1,5 pouces).
  4. Dispositif de commande à pédale selon la revendication 1, dans lequel les guides (80) sont en forme de S de façon à comporter des faces intérieures convexes et concaves leur permettant d'épouser la forme de différentes zones de pieds d'utilisateurs.
  5. Dispositif de commande à pédale selon la revendication 1, dans lequel la pédale (54) comprend, en outre, une butée à talon (84) au niveau de l'extrémité postérieure de la plateforme à pied, la butée à talon (84) étant convertible d'une première position s'étendant vers le haut à partir de la plateforme à pied et une seconde position au niveau de la plateforme à pied ou en dessous de celle-ci.
  6. Système de chirurgie comprenant :
    une unité de chirurgie comprenant un embout fonctionnel à main (212) raccordé à une console ; et
    un dispositif de commande à pédale (50) selon l'une quelconque des revendications 1, 2 et 5, en communication électronique avec la console, le capteur étant un capteur intégré, et le signal électronique étant destiné à être communiqué à la console et servant à commander ensuite l'embout fonctionnel (212).
  7. Système selon la revendication 6, dans lequel l'unité de chirurgie sert à des fins de chirurgie ophtalmique et l'embout fonctionnel (212) est conçu à des fins d'insertion dans un œil et comprend une lumière d'aspiration.
  8. Système selon la revendication 6, dans lequel les deux guides (80) sont ajustables.
  9. Système selon la revendication 6 ou 8, dans lequel les guides (80) sont allongés dans une direction antérieure-postérieure et courbés avec un segment postérieur convexe vers l'intérieur et un segment antérieur concave vers l'intérieur.
EP21197411.8A 2008-11-07 2009-11-06 Pédale de commande réglable pour chirurgie ophtalmique Active EP3954345B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11221008P 2008-11-07 2008-11-07
EP16199518.8A EP3156012B1 (fr) 2008-11-07 2009-11-06 Pédale de commande réglable pour chirurgie ophtalmique
PCT/US2009/063479 WO2010054140A2 (fr) 2008-11-07 2009-11-06 Commande de pédale de pied ajustable pour chirurgie ophtalmique
EP09753291.5A EP2376036B1 (fr) 2008-11-07 2009-11-06 Commande de pédale de pied ajustable pour chirurgie ophtalmique

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EP09753291.5A Division EP2376036B1 (fr) 2008-11-07 2009-11-06 Commande de pédale de pied ajustable pour chirurgie ophtalmique
EP16199518.8A Division EP3156012B1 (fr) 2008-11-07 2009-11-06 Pédale de commande réglable pour chirurgie ophtalmique

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EP3954345A1 EP3954345A1 (fr) 2022-02-16
EP3954345B1 true EP3954345B1 (fr) 2023-11-22

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EP21197411.8A Active EP3954345B1 (fr) 2008-11-07 2009-11-06 Pédale de commande réglable pour chirurgie ophtalmique
EP16199518.8A Active EP3156012B1 (fr) 2008-11-07 2009-11-06 Pédale de commande réglable pour chirurgie ophtalmique
EP17199880.0A Withdrawn EP3305257A1 (fr) 2008-11-07 2009-11-06 Pédale de commande réglable pour chirurgie ophtalmique
EP09753291.5A Active EP2376036B1 (fr) 2008-11-07 2009-11-06 Commande de pédale de pied ajustable pour chirurgie ophtalmique

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EP16199518.8A Active EP3156012B1 (fr) 2008-11-07 2009-11-06 Pédale de commande réglable pour chirurgie ophtalmique
EP17199880.0A Withdrawn EP3305257A1 (fr) 2008-11-07 2009-11-06 Pédale de commande réglable pour chirurgie ophtalmique
EP09753291.5A Active EP2376036B1 (fr) 2008-11-07 2009-11-06 Commande de pédale de pied ajustable pour chirurgie ophtalmique

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US (2) US8749188B2 (fr)
EP (4) EP3954345B1 (fr)
AU (1) AU2009313411B2 (fr)
CA (3) CA2951889C (fr)
WO (1) WO2010054140A2 (fr)

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WO2010054140A3 (fr) 2010-07-29
US20110098721A1 (en) 2011-04-28
EP3156012B1 (fr) 2021-10-20
EP3954345A1 (fr) 2022-02-16
US9271806B2 (en) 2016-03-01
CA2951889C (fr) 2017-09-12
CA2936454A1 (fr) 2010-05-14
CA2951889A1 (fr) 2010-05-14
WO2010054140A2 (fr) 2010-05-14
AU2009313411B2 (en) 2015-03-12
US20140135785A1 (en) 2014-05-15
CA2742977A1 (fr) 2010-05-14
US8749188B2 (en) 2014-06-10
CA2936454C (fr) 2018-10-23
EP3305257A1 (fr) 2018-04-11
EP3156012A1 (fr) 2017-04-19
AU2009313411A1 (en) 2010-05-14
EP2376036B1 (fr) 2018-01-03
EP2376036A2 (fr) 2011-10-19

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